Enjoyment: Right off the bat, I thought the setup of this was very cute, the area you've put together is enjoyable to be in and If i had my little cousins over, I'd definitely want to play this with them, I think it has a wholesome family vibe to it that's really cool. I enjoyed it minimally as this game revolves around that couch co-op social energy, alone it feels quite empty. I don't think this game needs to be couch co-op specifically though, a 1 player mode would have the exact same gameplay and clearly it works cause half the games are exactly that.. however, I wouldn't pitch it as a 1p game as socially I can see this lasting, and 1p idk.
Concept: The concept is solid, frogs trying to feed their selective palettes together in a swamp. Maybe to make this more competitive it would've been interesting to see how it would play in a hungry hungry hippo-esque setup, where everyone is just trying to get as many as possible? It reminds me of a Mario party mini-game.
Presentation: As beautiful as this game is to behold, one thing that hindered on the enjoyment was actually due to the muted tones of the game, I really like the muted blue, but I think it makes the game less readable for it, if you made the frogs the same colours as the thing they need to get, it would just make it easier to play and you wouldn't really need any instruction, or having that object next to the frog (which was a real nice touch admittedly)
Use of Limitation: Good call on making it a single pond with multiple frogs.. just generally doing a couch co-op thing is great for 1 map kinda stuff cause the social aspect can carry that map a long way. Sucks that its not suited for this kind of game jam cause a lot of people don't have others around them.